FR3025777A1 - PROTECTION CLOSURE UNDERWATER, ANTI SHARK, AUTO CARRIED AND REMOVABLE - Google Patents
PROTECTION CLOSURE UNDERWATER, ANTI SHARK, AUTO CARRIED AND REMOVABLE Download PDFInfo
- Publication number
- FR3025777A1 FR3025777A1 FR1402091A FR1402091A FR3025777A1 FR 3025777 A1 FR3025777 A1 FR 3025777A1 FR 1402091 A FR1402091 A FR 1402091A FR 1402091 A FR1402091 A FR 1402091A FR 3025777 A1 FR3025777 A1 FR 3025777A1
- Authority
- FR
- France
- Prior art keywords
- bars
- chain
- fence
- underwater
- shark
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 241000251468 Actinopterygii Species 0.000 claims description 5
- 230000003409 anti-rejection Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 241000251730 Chondrichthyes Species 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 241000251129 Galeocerdo Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/02—Lifeboats, life-rafts or the like, specially adapted for life-saving
- B63C9/05—Shark screens, e.g. buoyant means combined with means to surround or otherwise enclose the user
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/12—Nets held vertically in the water, e.g. seines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K79/00—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery
- A01K79/02—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery by electrocution
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Marine Sciences & Fisheries (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Artificial Fish Reefs (AREA)
Abstract
La clôture est composée de barreaux (2) rigides et flottants disposés dans le sens vertical et horizontal pour former des mailles (9) rectangulaires. Le dispositif est mise en place depuis le fonds marin (7) jusqu'à la surface (6). Les barreaux (2) sont liés entre eux par un système articulé (3) qui permet le mouvement aussi bien sur l'axe vertical que sur l'axe horizontal que latéral. Les barreaux (2) assurent la flottabilité du dispositif. La première rangée de barreaux (2) verticaux est fixée à une chaine (4), au moyen d'un lien articulé (8). La chaine (4) permet de positionnement et maintien du dispositif sur le fond (7). Si les conditions le nécessitent, le maintien de la chaine (4) peut être renforcé par des moyens d'ancrages classiques tels que corps mort, grappins ou spite (5).The fence is composed of rigid and floating bars (2) arranged in the vertical and horizontal direction to form rectangular meshes (9). The device is put in place from the seabed (7) to the surface (6). The bars (2) are interconnected by an articulated system (3) which allows movement on the vertical axis as well as on the horizontal and lateral axes. The bars (2) ensure the buoyancy of the device. The first row of vertical bars (2) is fixed to a chain (4), by means of an articulated link (8). The chain (4) for positioning and holding the device on the bottom (7). If the conditions require it, the maintenance of the chain (4) can be reinforced by conventional anchoring means such as dead body, grapples or spite (5).
Description
La présente intervention est une Clôture de protection sous-marine, anti requin, auto portée et amovible. Cette clôture permet d'entraver l'accès de certaines zones maritimes aux requins. A la suite des attaques de requins survenues à la Réunion depuis 2011, et aux études menées en depuis, en particulier : - Aux études liées à la mise en place de vigies sous-marines (*) - Aux données du programme suivi acoustiques de présences de requins (*). (*) Etudes auxquelles ont participé activement l'équipe dépositaire de cette demande de brevet. Il apparait nécessaire de mettre en oeuvre des solutions permettant d'assurer la sécurité des activités nautiques dans certaines zone du littoral tout en respectant le plus possible l'environnement et donc en particulier en évitant tout prélèvement. Or il s'avère que les moyens de protection opérationnels mis en oeuvre mondialement jusqu'à aujourd'hui sont essentiellement des dispositifs péchant, soit à l'aide de filets soit à base de ligne appâtées également nommées drumline. Ces dispositifs ont un fort impact sur l'environnement, dans la mesure où leur objectif principal et de capturer les requins. Ils ont également l'inconvénient de générer un grand nombre de prises annexes. Les zones ou les requins sont le plus présents près des côtes sont en grande parties des zones tropicales, ces zones sont également soumises à des événements climatiques intenses tels que les cyclones ou typhons. Conditions dans lesquelles, les dispositifs sous-marins côtiers sont soumis à rude épreuve. Le dispositif proposé dans le cadre de ce brevet, permet d'entraver le passage des requins potentiellement dangereux par leur taille, sans les pécher, en cloisonnant ou en limitant l'accès aux zones nautiques à protéger. La clôture étant constituée de barreaux rigides, la capture et l'immobilisation du poisson n'est pas possible. La clôture constitue un obstacle infranchissable sans dégradation. La taille des intervalles délimités par les barreaux ainsi que la section des barreaux pourra être adaptée au contexte. Elle sera généralement de 1m/ 0,6m et permettra le passage d'un grand nombre d'espèce mais limitera le passage des poissons dont l'envergure dépasse 0,6 m. Ce qui est le cas en particulier du requin bouledogue ou tigre d'une taille supérieur à 1m.This intervention is an underwater protection fence, shark, self-supporting and removable. This fence serves to hinder the access of certain sea areas to sharks. Following the shark attacks that have occurred in Reunion Island since 2011, and the studies conducted in the past, in particular: - Studies related to the establishment of underwater lookouts (*) - To the data of the program monitoring acoustic attendance sharks (*). (*) Studies in which the depository team of this patent application participated actively. It appears necessary to implement solutions to ensure the safety of water activities in certain coastal areas while respecting the environment as much as possible and therefore in particular avoiding any removal. However, it turns out that the operational protection means implemented worldwide until today are essentially devices fishing, either with nets or baited line based also called drumline. These devices have a strong impact on the environment, to the extent that their main purpose and capture sharks. They also have the disadvantage of generating a large number of bycatch. The areas where sharks are most present near the coast are largely tropical areas, these areas are also subject to intense climatic events such as cyclones or typhoons. Conditions in which coastal submarine devices are under severe strain. The device proposed in the framework of this patent, makes it possible to hinder the passage of potentially dangerous sharks by their size, without sinning, by partitioning or limiting access to the nautical areas to be protected. Since the fence is made up of rigid bars, the capture and immobilization of the fish is not possible. The fence is an impassable obstacle without degradation. The size of the intervals delimited by the bars as well as the section of the bars can be adapted to the context. It will generally be 1m / 0.6m and will allow the passage of a large number of species but will limit the passage of fish whose wingspan exceeds 0.6m. This is especially the case for bulldog or tiger sharks larger than 1m in size.
Le dispositif proposé permet le maintient vertical de la clôture, sans avoir recours à des bouées de surface pour son positionnement et son soutien. Il est constitué d'éléments auto porteur et non soutenus par une bouée de surface. Ce qui limite les contraintes générale sur le dispositif et augmente donc sa capacité de résistance aux conditions climatiques extrêmes. 3025777 - 2- Le dispositif proposé peut être facilement mise en oeuvre, il ne nécessite pas la pose d'une infrastructure lourde sur les fonds marins et peut être renforcé par des moyens d'ancrage classique. Ce qui permet de prévoir le relevage du dispositif en cas d'avis de forte tempête tropicale, de cyclone ou lors des périodes nécessitant le libre accès aux zones 5 protégées, ce qui peut être le cas notamment au cours de la saison de migration des baleines. La possibilité de relevage du dispositif est un facteur important de limitation des couts de maintenance. Le dispositif proposé est infranchissable par des requins d'une certaine taille, ceci constitue un facteur important de sécurité pour les utilisateurs des zones nautiques protégées 10 ainsi qu'un avantage indéniable par rapport aux systèmes d'effarouchements. La simplicité de production et de mise en oeuvre du dispositif constitue un avantage économique. La figure 1 représente le schéma de principe du dispositif vu de face. La figure 2 est une vue plus détaillée des différents composants de la clôture.The proposed device allows the vertical maintenance of the fence, without the use of surface buoys for its positioning and support. It consists of self-supporting elements and not supported by a surface buoy. This limits the general constraints on the device and thus increases its ability to withstand extreme weather conditions. The proposed device can be easily implemented, it does not require the installation of a heavy infrastructure on the seabed and can be reinforced by conventional anchoring means. This makes it possible to predict the raising of the device in the event of a warning of a strong tropical storm, a cyclone or during periods requiring free access to protected areas, which may be the case in particular during the whale migration season. . The possibility of lifting the device is an important factor in limiting maintenance costs. The proposed device is impassable by sharks of a certain size, this constitutes an important factor of safety for the users of the protected nautical zones 10 as well as an undeniable advantage compared to the scaring systems. The simplicity of production and implementation of the device is an economic advantage. Figure 1 shows the block diagram of the device seen from the front. Figure 2 is a more detailed view of the different components of the fence.
15 La clôture (1) est composée de barreaux (2) rigides et flottants disposés dans le sens vertical et horizontal pour former des mailles rectangulaires (9). Le maillage (9) constitué par ces barreaux assure la protection contre le franchissement, mais ne permet pas de bloquer et d'immobiliser les poissons comme les filets classiques. La tailles, des mailles délimitée par ces barreaux sera adaptée aux conditions de protection nécessaires et sera déterminée en 20 particulier par l'envergure des poissons à exclure de la zone. Par ailleurs les barreaux (2) ont une flottabilité positive qui assure le positionnement vertical de la clôture (1) dans le milieu marin. La section des barreaux (2) sera calculée de manière à adapter la flottabilité du dispositif (1) aux conditions environnementale et en particulier aux conditions de houles et de courants. La flottabilité des barreaux (2) permet ne 25 pas avoir recours à des bouées de surface pour soutenir le dispositif. Le fait que chaque barreau soit auto porté et non soutenu par une bouée de surface, limite les contraintes générales sur le dispositif (1), ce qui qui permet une très bonne résistance du dispositif (1) à la houle et au courant. Les barreaux (2) sont généralement creux et étanches, ils peuvent-être réalisés dans 30 différents matériaux. Les matériaux privilégiés étant le polyéthylène (PE) ou l'aluminium. La clôture (1) est prévue pour couvrir la totalité de la colonne d'eau depuis le fonds marin (7) jusqu'à la surface (6). La hauteur de la barrière pourra être adaptée en fonction de la profondeur du lieu de mise en place. Le principe de la clôture est d'assurer un cloisonnement de la zone. 3025777 - 3- Le dispositif est constitué de barreaux (2) chaque barreau (2) est muni d'un oeillet (10) à chaque extrémité. Cet oeillet (10) permet de fixer les barreaux entre eux au moyen d'un lien articulé (3) ou dispositif articulé (3). Le lien (3) ou dispositif articulé (3) permet le mouvement aussi bien sur l'axe vertical, 5 que sur l'axe horizontal que sur l'axe latéral. Le lien articulé (3) est réalisé soit au moyen d'un bout en nylon, spectra, ou tout autre matériau, soit par une chaine ou de mousquetons inox ou une pièce inox. Chaque barreau (2) de la première rangée verticale et fixé sur une chaine (4) soit par un lien articulé (8) réalisé au moyen d'un boot en nylon, spectra, ou tout autre matériau, soit 10 par un mousqueton inox ou une pièce inox. La chaine (4) permet le maintien du dispositif au plus près du fond marin. Sa section est définie en fonction de l'environnement et en particulier des conditions de houles et de courants. Si les conditions le nécessitent, le maintien de la chaine (4) peut être renforcé par des moyens d'ancrages classiques tels que corps mort, grappins ou spite (5) ou tout autre moyens 15 appropriés. Le dispositif selon l'invention est donc destiné à limiter l'accès des requins à certaines zones marines.The fence (1) is composed of rigid and floating bars (2) arranged in the vertical and horizontal direction to form rectangular meshes (9). The mesh (9) constituted by these bars provides protection against crossing, but does not block and immobilize fish as conventional nets. The sizes, mesh bounded by these bars will be adapted to the necessary protection conditions and will be determined in particular by the size of the fish to be excluded from the area. In addition, the bars (2) have a positive buoyancy which ensures the vertical positioning of the fence (1) in the marine environment. The section of the bars (2) will be calculated so as to adapt the buoyancy of the device (1) to the environmental conditions and in particular to the conditions of swells and currents. The buoyancy of the bars (2) makes it unnecessary to use surface buoys to support the device. The fact that each bar is self-supported and not supported by a surface buoy, limits the general constraints on the device (1), which allows a very good resistance of the device (1) to the swell and the current. The bars (2) are generally hollow and sealed, they can be made in 30 different materials. Preferred materials are polyethylene (PE) or aluminum. The fence (1) is intended to cover the entire water column from the seabed (7) to the surface (6). The height of the barrier can be adapted according to the depth of the place of installation. The principle of the fence is to ensure a partitioning of the area. 3025777 - 3- The device consists of bars (2) each bar (2) is provided with an eyelet (10) at each end. This eyelet (10) makes it possible to fix the bars together by means of an articulated link (3) or articulated device (3). The link (3) or articulated device (3) allows movement both on the vertical axis, on the horizontal axis and on the lateral axis. The articulated link (3) is made either by means of a nylon tip, spectra, or any other material, either by a chain or stainless carabiners or a stainless steel part. Each bar (2) of the first vertical row and fixed on a chain (4) is by an articulated link (8) made by means of a boot nylon, spectra, or any other material, either 10 by a stainless steel carabiner or a stainless steel piece. The chain (4) allows the maintenance of the device closer to the seabed. Its section is defined according to the environment and in particular the conditions of swells and currents. If the conditions so require, the maintenance of the chain (4) can be reinforced by conventional anchoring means such as dead bodies, grapples or spite (5) or any other appropriate means. The device according to the invention is therefore intended to limit the access of sharks to certain marine areas.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1402091A FR3025777B1 (en) | 2014-09-17 | 2014-09-17 | PROTECTION CLOSURE UNDERWATER, ANTI SHARK, AUTO CARRIED AND REMOVABLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1402091A FR3025777B1 (en) | 2014-09-17 | 2014-09-17 | PROTECTION CLOSURE UNDERWATER, ANTI SHARK, AUTO CARRIED AND REMOVABLE |
Publications (2)
Publication Number | Publication Date |
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FR3025777A1 true FR3025777A1 (en) | 2016-03-18 |
FR3025777B1 FR3025777B1 (en) | 2017-06-23 |
Family
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Application Number | Title | Priority Date | Filing Date |
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FR1402091A Expired - Fee Related FR3025777B1 (en) | 2014-09-17 | 2014-09-17 | PROTECTION CLOSURE UNDERWATER, ANTI SHARK, AUTO CARRIED AND REMOVABLE |
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FR (1) | FR3025777B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017168294A1 (en) * | 2016-03-30 | 2017-10-05 | Stellenbosch University | A shark barrier |
FR3062025A1 (en) * | 2017-01-24 | 2018-07-27 | Ronan Joseph Marie Le Faou | SUBMARINE BARRIER FOR THE PROTECTION OF SHELLFISH ON CUTTING CONCESSIONS OF PREDATION BY DAURADES |
WO2018197510A1 (en) | 2017-04-24 | 2018-11-01 | Elements Works Srl | Barrier structure assembly and method of construction |
FR3075756A1 (en) * | 2017-12-26 | 2019-06-28 | Cesar Jacquet | AQUATIC PROTECTION DEVICE |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014083514A1 (en) * | 2012-11-27 | 2014-06-05 | Stellenbosch University | A shark barrier |
AU2014100588A4 (en) * | 2013-05-31 | 2014-07-17 | Craig Justin Moss | Barrier |
-
2014
- 2014-09-17 FR FR1402091A patent/FR3025777B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014083514A1 (en) * | 2012-11-27 | 2014-06-05 | Stellenbosch University | A shark barrier |
AU2014100588A4 (en) * | 2013-05-31 | 2014-07-17 | Craig Justin Moss | Barrier |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017168294A1 (en) * | 2016-03-30 | 2017-10-05 | Stellenbosch University | A shark barrier |
US10883239B2 (en) | 2016-03-30 | 2021-01-05 | Stellenbosch University | Shark barrier |
AU2017243768B2 (en) * | 2016-03-30 | 2022-05-26 | Stellenbosch University | A shark barrier |
FR3062025A1 (en) * | 2017-01-24 | 2018-07-27 | Ronan Joseph Marie Le Faou | SUBMARINE BARRIER FOR THE PROTECTION OF SHELLFISH ON CUTTING CONCESSIONS OF PREDATION BY DAURADES |
WO2018197510A1 (en) | 2017-04-24 | 2018-11-01 | Elements Works Srl | Barrier structure assembly and method of construction |
FR3075756A1 (en) * | 2017-12-26 | 2019-06-28 | Cesar Jacquet | AQUATIC PROTECTION DEVICE |
Also Published As
Publication number | Publication date |
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FR3025777B1 (en) | 2017-06-23 |
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